#include<stdio.h>
int main()
{
  int a=3;
  a=4;
  const int b=4;
  printf("%d %d\n",&a,&b);
  printf("%d %d\n",a,b);
  int *p=&a;
  *(p-1)=5;
  *(p+1)=5;
 // *(p+10000)=5;
  printf("%d %d\n",a,b);


}
